A laser film thickness measuring device for a film production line

Abstract

The application discloses a kind of laser film thickness measuring devices for film production line, it is related to thickness measuring device field, including two groups of transmission pedestal, there is interval between two groups of transmission pedestal, the two sides of transmission pedestal are provided with electric control box, and electric control box is installed with crosspiece between, the crosspiece has two groups, symmetrically set in the upper and lower positions of transmission pedestal, characterized in that: the inside of crosspiece is installed with a group of connecting cross bar and support plate, the inside of support plate is located between crosspiece and connecting cross bar and is provided with laser thickness gauge.This application can rotate laser thickness gauge, in the process of not using equipment, can drive laser thickness gauge to rotate by motor, adjust the angle of laser thickness gauge, then seal laser thickness gauge by clamping plate, and in the process of detection, can also limit and fix laser thickness gauge by clamping plate, improve the stability of laser thickness gauge.

Description

Technical Field

[0001] This invention relates to the field of thickness measuring devices, specifically a laser film thickness measuring device for use in film production lines. Background Technology

[0002] Butyl damping sheets are made primarily of butyl rubber and are used in vehicle body panels (such as side panels, doors, fenders, and roofs) for noise reduction and vibration damping. These sheet-like products, lined with aluminum foil (fiberglass cloth), provide excellent vibration damping performance during driving and door closing. Their long-lasting adhesion and good damping properties ensure vehicle durability and comfort. The production process of butyl damping sheets involves batching, mixing, kneading, extrusion, lamination, stamping, and cutting. After cutting, the thickness of each sheet needs to be measured to avoid producing sheets that do not meet requirements.

[0003] Existing technologies, such as the automotive gasket testing device disclosed in Chinese Patent Publication No. CN214052621U, test the structure of metal electronic gaskets. During the testing process, the testing is carried out by contact and other methods. However, the testing effect is poor for the butyl damping film in this application because the butyl damping film itself is flexible, and the extrusion contact method can easily cause deformation. Alternatively, the existing technology, a thermal conductive gasket online thickness testing mechanism disclosed in Chinese Patent Publication No. CN218545597U, uses laser testing during the testing process. The height can be adjusted by adjusting the structure, which is convenient for testing films of different thicknesses.

[0004] However, in the current technology, laser detection during height inspection is usually performed on the raw material as a whole before cutting (if the finished product is inspected, different inspection routes need to be adjusted according to the structure of the finished product, which is less efficient and more costly). However, since the film is a composite structure, if problems occur during the lamination process (such as uneven pressing or folded edges), gaps will be generated at the edges of the film. It is difficult for the current technology to detect these gaps. Therefore, the laser detection device needs to be installed on the conveyor structure during the inspection process. At this time, due to the high level of pollution in the production environment (dust, impurities, etc.), these particles can easily adhere to the laser sensor, resulting in a decrease in the accuracy of the sensor. Summary of the Invention

[0005] Based on this, the purpose of the present invention is to provide a laser film thickness measuring device for film production lines, so as to solve the technical problems of inconvenient film edge detection and easy dust accumulation in laser thickness gauges after long-term exposure.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a laser film thickness measuring device for a film production line, comprising two sets of conveying bases with a gap between them, an electrical control box on each side of the conveying bases, and a crossbeam between the electrical control boxes, wherein there are two sets of crossbeams symmetrically arranged above and below the conveying bases, characterized in that: a connecting crossbar and a support plate are installed inside each crossbeam, a laser thickness gauge is installed inside the support plate between the crossbeam and the connecting crossbar, a limit shaft and a rotating shaft are respectively connected to both sides of the laser thickness gauge, an L-shaped connecting rod and a double-hole connecting rod are fixedly connected to the inner wall of the crossbeam, the limit shaft is drivenly connected to the L-shaped connecting rod, the rotating shaft is connected to the lower limit hole of the double-hole connecting rod, and a gear is connected to the outer side of the rotating shaft, a motor is installed inside the connecting crossbar, and a locking cylinder is installed on the side of the support plate away from the laser thickness gauge, the output end of the locking cylinder faces the laser thickness gauge, and a locking plate is installed at the end of the output end.

[0007] By adopting the above technical solution, the edge of butyl damping film can be easily detected, and during the detection process, the angle of the laser thickness gauge can also be detected by a visual sensor, making it convenient to adjust the angle.

[0008] The invention is further configured such that the output end of the motor is engaged in another positioning hole of the double-hole connecting rod, and the output end of the motor is connected to a transmission tooth, which is connected to the rotating shaft for transmission.

[0009] Preferably, this facilitates motor limiting and improves motor operation stability.

[0010] The invention is further configured such that the laser thickness gauges in the upper and lower crossbeams are symmetrically arranged, with the center of symmetry and the vision sensor located on the same horizontal line. A measuring plate is connected to the end face of the crossbeam and the side of the laser thickness gauge. The angle of the measuring plate is adjusted by adjusting bolts, and a level is connected to the outside of the measuring plate.

[0011] Preferably, the angle of the measuring plate can be easily adjusted by adjusting the bolts, and the angle of the measuring instrument can be confirmed by using a level.

[0012] The invention is further configured such that after the laser thickness gauge is rotated, the visual sensor can also detect the angle of the laser thickness gauge by the obstruction of the measuring plate and the positioning fluorescent strip.

[0013] Preferably, it facilitates the confirmation of the angle of the laser thickness gauge by checking the obstruction between the positioning fluorescent strip and the measuring plate, thereby facilitating the correction of the laser thickness gauge angle.

[0014] The present invention is further configured such that an operation box is installed on the side of the transmission base, and a support foot is connected to the bottom of the transmission base, the support foot being a rubber structure.

[0015] Preferably, the transmission base can be easily operated, and the support feet improve stability.

[0016] The invention is further configured such that a sliding door is provided on the side of the electrical control box, through which the electrical control box is opened. An electrical cabinet is installed inside the electrical control box, and an upper support frame is connected to the top of the electrical cabinet. A laser controller and an optical detection controller are installed on the side of the upper support frame, and a lower support frame is connected to the side of the electrical cabinet. A laser controller is also installed on the outer side of the lower support frame for controlling the laser thickness gauge, which facilitates detection.

[0017] The invention is further configured such that a camera is connected to the side of the visual sensor, the camera being used to photograph the side of the film and simultaneously photograph the positioning fluorescent strip on the outer wall of the laser thickness gauge, thereby enabling the laser thickness gauge to be positioned at a specific angle.

[0018] Preferably, the laser thickness gauge and the vision sensor are conveniently controlled by model.

[0019] The present invention is further configured such that a connecting line is connected to the side of the laser thickness gauge, and part of the connecting line is a spiral.

[0020] Preferably, this design allows for easy angle adjustment of the laser thickness gauge, thus facilitating rotation.

[0021] The invention is further configured such that the edge of the locking plate is provided with a protruding arc-shaped plate, and the arc-shaped plate matches the structure of the laser probe of the laser thickness gauge, so that the laser thickness gauge can be sealed when the locking plate is attached to the outside of the laser thickness gauge.

[0022] Preferably, the laser thickness gauge can be conveniently limited on both sides, and the bottom opening of the laser thickness gauge is also sealed to prevent dust from entering.

[0023] In summary, the present invention has the following main beneficial effects: This invention utilizes a rotatable laser thickness gauge. When the equipment is not in use, the laser thickness gauge can be rotated by a motor to adjust its angle. Subsequently, a locking plate seals the laser thickness gauge. During the testing process, the locking plate also limits and fixes the laser thickness gauge, improving its stability.

[0024] This invention uses a visual sensor to inspect the side of a butyl damping film, detecting defects such as grooves or stacking at the bonding area. During the inspection, the angle of the laser thickness gauge can also be calibrated. The visual sensor calibrates the position of the measuring plate and the positioning fluorescent strip, facilitating angle limiting of the laser thickness gauge during each rotation. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a structural schematic diagram of the upper and lower installation positions of the connecting crossbar in this invention; Figure 3 This is a schematic diagram of the internal structure of the electrical control box of the present invention; Figure 4 This is a schematic diagram of the structure for installing the dead sensor of the present invention; Figure 5 This is a schematic diagram of the connection structure of the laser thickness gauge of the present invention; Figure 6 For the present invention Figure 5 A magnified schematic diagram of the partial structure at point A in the middle; Figure 7 This is a schematic diagram of the structure of the measuring plate of the present invention; Figure 8 This is a schematic diagram of the structure for releasing the limiting position of the laser thickness gauge of the present invention; Figure 9 This is a schematic diagram of the structure of the laser thickness gauge of the present invention when it is stored.

[0026] Explanation of reference numerals in the attached figures: 1. Conveyor base; 101. Operation box; 2. Electrical control box; 201. Sliding door; 202. Electrical cabinet; 203. Upper support frame; 204. Laser controller; 205. Optical inspection controller; 206. Lower support frame; 207. Mounting plate; 3. Horizontal frame; 301. Connecting crossbar; 302. Support plate; 303. L-shaped connecting rod; 304. Double-hole connecting rod; 305. Motor mounting bracket; 4. Locking cylinder; 5. Laser thickness gauge; 501. Limiting shaft; 502. Rotating shaft; 503. Positioning fluorescent strip; 6. Vision sensor; 601. Camera; 7. Clamping plate; 8. Connecting wire; 9. Motor; 10. Measuring plate; 1001. Adjusting bolt; 11. Level; 12. Transmission gear. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0028] The embodiments of the present invention will now be described.

[0029] For examples, please refer to Figures 1 to 9 A laser film thickness measuring device for a film production line includes two sets of conveyor bases 1 with a gap between them. An electrical control box 2 is installed on both sides of each conveyor base 1, and a crossbeam 3 is installed between the control boxes 2. There are two sets of crossbeams 3, symmetrically arranged above and below the conveyor bases 1. Inside each crossbeam 3, a connecting crossbar 301 and a support plate 302 are installed. Inside the support plate 302, between the crossbeam 3 and the connecting crossbar 301, a laser thickness gauge 5 is installed. The laser thickness gauge 5 has two sides... A limiting shaft 501 is connected to a rotating shaft 502. An L-shaped connecting rod 303 and a double-hole connecting rod 304 are fixedly connected to the inner wall of the crossbar 3. The limiting shaft 501 is connected to the L-shaped connecting rod 303 via a transmission connection. The rotating shaft 502 is connected to the lower limiting hole of the double-hole connecting rod 304, and a gear is connected to the outer side of the rotating shaft 502. A motor 9 is installed inside the connecting crossbar 301. The output end of the motor 9 engages in another positioning hole of the double-hole connecting rod 304. The output end of the motor 9 is connected to a transmission gear 12 for transmission. The gear 12 is connected to the rotating shaft 502. A locking cylinder 4 is installed on the side of the support plate 302 away from the laser thickness gauge 5. The output end of the locking cylinder 4 faces the laser thickness gauge 5, and a locking plate 7 is installed at the end of the output end. The laser thickness gauges 5 are symmetrically arranged in the upper and lower crossbeams 3, and the center of symmetry is on the same horizontal line as the vision sensor 6. A measuring plate 10 is connected to the end face of the crossbeam 3 on the side of the laser thickness gauge 5. The angle of the measuring plate 10 is adjusted by adjusting bolt 1001, and a level 11 is connected to the outside of the measuring plate 10 to confirm the angle of the measuring plate 10. During the adjustment process, the angle of the measuring plate 10 is kept horizontal by observing the level 11. After each rotation of the laser thickness gauge 5, the vision sensor 6 can also detect the angle of the laser thickness gauge 5 by the obstruction of the measuring plate 10 and the positioning fluorescent strip 503. Thus, the angle of the laser thickness gauge 5 can be easily calibrated before detection, which improves the detection effect and reduces the number of manual calibrations.

[0030] For details regarding the above embodiments, please refer to [link / reference]. Figure 1 An operation box 101 is installed on the side of the transmission base 1, and a support foot is connected to the bottom of the transmission base 1. The support foot is a rubber structure.

[0031] For details regarding the above embodiments, please refer to [link / reference]. Figures 2 to 4The control box 2 has a sliding door 201 on its side. The control box 2 can be opened through the sliding door 201. An electrical cabinet 202 is installed inside the control box 2. An upper support frame 203 is connected to the top of the electrical cabinet 202. A laser controller 204 and an optical detection controller 205 are installed on the side of the upper support frame 203. A lower support frame 206 is connected to the side of the electrical cabinet 202. A laser controller 204 is also installed on the outside of the lower support frame 206 for controlling the laser thickness gauge 5 and facilitating detection.

[0032] For details regarding the above embodiments, please refer to [link / reference]. Figure 4 An mounting plate 207 is installed on the outer wall of the electrical control box 2. The mounting plate 207 is used for the installation and positioning of the vision sensor 6. A camera 601 is connected to the side of the vision sensor 6. The camera 601 is used to take pictures of the side of the film and at the same time take pictures of the positioning fluorescent strip 503 on the outer wall of the laser thickness gauge 5, so as to limit the angle of the laser thickness gauge 5.

[0033] For further details, please refer to Figure 5 The laser thickness gauge 5 has a connecting line 8 on its side. The connecting line 8 has a spiral structure, which allows for easy rotation and angle adjustment.

[0034] Finally, please see Figure 5 , Figure 8 and Figure 9 The edge of the locking plate 7 is provided with a protruding arc plate, and the arc plate matches the structure of the laser probe of the laser thickness gauge 5. When the locking plate 7 is attached to the outside of the laser thickness gauge 5, it can seal the laser thickness gauge 5.

[0035] In use, first, activate the locking cylinder 4 to move the locking plate 7 away from the outside of the laser thickness gauge 5. Then, start the motor 9. The motor 9 drives the rotating shaft 502 to rotate through the transmission gear 12. The rotating shaft 502 drives the laser thickness gauge 5 to adjust its angle. The vision sensor 6 detects the rotation angle of the laser thickness gauge 5 in real time. When the positioning fluorescent strip 503 is completely below the measuring plate 10 (i.e., horizontal with the measuring plate 10), stop the motor 9. Then, activate the locking cylinder 4 to move downwards and limit the locking of the laser thickness gauge 5, thus fixing the laser thickness gauge 5 and improving the installation effect. First, place the butyl damping film (hereinafter referred to as the film) to be tested on the conveying base 1. Then, start the conveying base 1 through the operation box 101 to move the film on the conveying base 1. When it moves between the electrical control box 2, the vision sensor 6 takes a picture of the edge of the film to detect the edge of the film. Defects such as gaps and overlays are recorded. If any defects occur, an alarm is triggered and the data is marked. Simultaneously, the upper and lower laser thickness gauges 5 continuously irradiate the film surface with laser light. The distance between the laser thickness gauge 5 and the upper and lower layers of the film is determined by the time it takes for the laser light to reflect back to the laser thickness gauge 5. The thickness of the film is obtained by subtracting the distance difference from the distance between the laser thickness gauges 5. The laser thickness gauge 5 continuously monitors the film, and can promptly detect and alarm when the film thickness changes, improving the detection efficiency. After the detection is completed, the locking cylinder 4 is activated again, moving the locking plate 7 away from the laser thickness gauge 5. The motor 9 is then activated to rotate the laser thickness gauge 5 until it aligns with the locking plate 7. The locking cylinder 4 pushes the locking plate 7 to cover the laser thickness gauge 5, sealing the measurement position of the laser thickness gauge 5 and reducing dust accumulation and contamination.

[0036] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the invention and are not intended to limit it. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the invention, but such modifications, substitutions, and variations are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A laser film thickness measuring device for a film production line, comprising two sets of conveying bases (1) with a gap between them, an electrical control box (2) on both sides of each conveying base (1), an mounting plate (207) mounted on the outer wall of the electrical control box (2), a vision sensor (6) mounted on the inner side of the mounting plate (207), and a crossbeam (3) between the electrical control boxes (2), wherein there are two sets of the crossbeam (3) symmetrically arranged above and below the conveying bases (1), characterized in that: Inside each crossbeam (3), a set of connecting crossbars (301) and a support plate (302) are installed. Inside the support plate (302), between the crossbeam (3) and the connecting crossbars (301), a laser thickness gauge (5) is installed. The two sides of the laser thickness gauge (5) are respectively connected to a limiting shaft (501) and a rotating shaft (502). The inner wall of the crossbeam (3) is fixedly connected to an L-shaped connecting rod (303) and a double-hole connecting rod (304). The limiting shaft (501) The rotating shaft (502) is connected to the lower limit hole of the double-hole connecting rod (304) and the rotating shaft (502) is connected to the outer side of the rotating shaft (502). A motor (9) is installed inside the connecting crossbar (301). A locking cylinder (4) is installed on the side of the support plate (302) away from the laser thickness gauge (5). The output end of the locking cylinder (4) faces the laser thickness gauge (5), and a locking plate (7) is installed at the end of the output end. The edge of the locking plate (7) is provided with a protruding arc plate, and the arc plate matches the structure of the laser probe of the laser thickness gauge (5). When the locking plate (7) is attached to the outside of the laser thickness gauge (5), it can seal the laser thickness gauge (5). The locking cylinder (4) is activated, which drives the locking plate (7) to move away from the laser thickness gauge (5). The motor (9) is activated, which drives the laser thickness gauge (5) to rotate until it is aligned with the locking plate (7). The locking cylinder (4) pushes the locking plate (7) to move and cover the laser thickness gauge (5), thus achieving the sealing of the measurement position of the laser thickness gauge (5).

2. The laser film thickness measuring device for a film production line according to claim 1, characterized in that: The output end of the motor (9) is engaged in another positioning hole of the double-hole connecting rod (304), and the output end of the motor (9) is connected to a transmission gear (12), which is connected to the rotating shaft (502) for transmission.

3. The laser film thickness measuring device for a film production line according to claim 1, characterized in that: The laser thickness gauge (5) in the horizontal frame (3) is symmetrically arranged, with the center of symmetry and the visual sensor (6) located on the same horizontal line. The end face of the horizontal frame (3) is connected to the side of the laser thickness gauge (5) with a measuring plate (10). The angle of the measuring plate (10) is adjusted by adjusting bolts (1001), and a level (11) is connected to the outside of the measuring plate (10).

4. A laser film thickness measuring device for a film production line according to claim 3, characterized in that: After the laser thickness gauge (5) is rotated, the visual sensor (6) can also detect the angle of the laser thickness gauge (5) by the obstruction of the measuring plate (10) and the positioning fluorescent strip (503).

5. A laser film thickness measuring device for a film production line according to claim 1, characterized in that: An operation box (101) is installed on the side of the transmission base (1), and a support foot is connected to the bottom of the transmission base (1), with the support foot being a rubber structure.

6. A laser film thickness measuring device for a film production line according to claim 1, characterized in that: The electrical control box (2) has a sliding door (201) on its side. The electrical control box (2) can be opened through the sliding door (201). An electrical cabinet (202) is installed inside the electrical control box (2). An upper support frame (203) is connected to the top of the electrical cabinet (202). A laser controller (204) and an optical detection controller (205) are installed on the side of the upper support frame (203). A lower support frame (206) is connected to the side of the electrical cabinet (202). A laser controller (204) is also installed on the outside of the lower support frame (206) for controlling the laser thickness gauge (5) and facilitating detection.

7. A laser film thickness measuring device for a film production line according to claim 4, characterized in that: The visual sensor (6) is connected to a camera (601) on its side. The camera (601) is used to take pictures of the side of the film and at the same time take pictures of the positioning fluorescent strip (503) on the outer wall of the laser thickness gauge (5), so as to limit the angle of the laser thickness gauge (5).

8. A laser film thickness measuring device for a film production line according to claim 1, characterized in that: The laser thickness gauge (5) has a connecting line (8) connected to its side, and part of the structure of the connecting line (8) is a spiral.

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